Inter-autonomous system trace route message
AssigneeJuniper Networks, Inc.
InventorsReji THOMAS, Ronald BONICA
Life of this patent
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Abstract
A network device may receive a message. The network device may determine that the message includes return information indicating a path to an initial device that generated the message. The network device may modify the message by adding an upstream device identifier, wherein the upstream device identifier identifies a device from which the message is received. The network device may modify the message by adding an indication of whether the initial device is reachable by the network device using a segment identifier. The network device may provide the modified message to a downstream device.
Claims20
A method, comprising:
- receiving, by a network device, a message;
- determining, by the network device, that the message includes return information indicating a path to an initial device that generated the message;
- modifying the message by adding, by the network device to the return information, an upstream device identifier,
- wherein the upstream device identifier identifies a device from which the message is received;
- modifying the message by adding, by the network device to the return information, an indication of whether the initial device is reachable by the network device using a segment identifier;
- and
- providing, by the network device, the modified message to a downstream device.
A network device, comprising:
- one or more memories;
- and
- one or more processors, communicatively coupled to the one or more memories, to:
- determine that a message includes return information indicating a path to an initial device that generated the message;
- modify the message by adding, to the return information, an upstream device identifier,
- wherein the upstream device identifier identifies a device from which the message is received;
- modify the message by adding, to the return information, an indication of whether the initial device is reachable by the network device using a segment identifier;
- provide the modified message to a downstream device;
- receive a return message including the return information;
- and
- selectively forward the return message to the device from which the message is received, or to the initial device, based on the indication of whether the initial device is reachable by the network device using the segment identifier.
A non-transitory computer-readable medium storing instructions, the instructions comprising:
- one or more instructions that, when executed by one or more processors of a network device, cause the one or more processors to:
- determine that a message includes return information indicating a path to an initial device that generated the message;
- add, to the return information, an upstream device identifier, wherein the upstream device identifier identifies a device from which the message is received;
- add, to the return information, an indication of whether the initial device is reachable by the network device using a segment identifier associated with the initial device;
- receive or generate a return message including the return information;
- and
- selectively forward the return message to the device from which the message is received, or to the initial device, based on the indication of whether the initial device is reachable by the network device using the segment identifier.
Dependencies are inferred from the claim text.